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Reactivity of condensed thiophenes in the Diels-Alder reaction: The reactivity of 3-aminothieno [3,4:3`,4`] benzo [b] pyranone; 3-aminothieno [3,4-c] quinoline and of 5-amino-7-substituted thieno [3,4-d] pyridazinone toward electron-poor olefins and acetylenes

โœ Scribed by Fatima Al-Omran; Mervat Mohammed Abdel Khalik; Hanan Al-Awadhi; Mohammed Hilmy Elnagdi


Publisher
Elsevier Science
Year
1996
Tongue
French
Weight
625 KB
Volume
52
Category
Article
ISSN
0040-4020

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Cycloadditions of thienopyridazines and a thienopyridine with electron-poor olefins and acetylenes as dienophiles are described. The nonisolable adducts undergo subsequent loss of hydrogen sulfide to give substituted phthalazines and substituted isoquinolines, respectively. แญง 1997 John Wiley & Sons,